This taxon has a broadly elliptical arched valve. The raphe valve has a narrow linear axial area that ends in a small semicircular clear space. there is a small central area that is circular to irregularily shaped. It is filiform with close proximal ends. It has straight distal ends and curved radiate striae that is finely puntate. The straie do not extend to the margin but are interrupted by a continuous clear marginal area. The pseudoraphe valve is very narrow and linear. It has no central area. The striae are radiate and curved(Patrick and Reimer 1966).